Io's surface is covered in volcanoes and mountains. The larger ones are all named after prominent figures from the mythological travels of Io. Here is a list of those mountains and volcanoes who have names.
- Boösaule Montes
- Caucasus Mons
- Crimea Mons
- Dorian Montes
- Egypt Mons
- Euboea Montes
- Euxine Mons
- Haemus Montes
- Hi'iaka Montes
- Ionian Mons
- Mongibello Mons
- Nile Montes
- Ot Mons
- Rata Mons
- Seth Mons
- Shamshu Mons
- Silpium Mons
- Skythia Mons
- Tohil Mons
- Zal Montes